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nfsd4: cleanup state.h comments

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These comments are mostly out of date.

Reported-by: Bryan Schumaker <bjschuma@netapp.com>
This commit is contained in:
J. Bruce Fields 2011-09-28 11:47:20 -04:00
parent 6409a5a65d
commit b31b30e5c7
1 changed files with 8 additions and 37 deletions
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45
fs/nfsd/state.h
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@ -332,25 +332,6 @@ struct nfs4_replay {
char rp_ibuf[NFSD4_REPLAY_ISIZE];
};
/*
* nfs4_stateowner can either be an open_owner, or a lock_owner
*
* so_idhash: stateid_hashtbl[] for open owner, lockstateid_hashtbl[]
* for lock_owner
* so_strhash: ownerstr_hashtbl[] for open_owner, lock_ownerstr_hashtbl[]
* for lock_owner
* so_perclient: nfs4_client->cl_perclient entry - used when nfs4_client
* struct is reaped.
* so_perfilestate: heads the list of nfs4_ol_stateid (either open or lock)
* and is used to ensure no dangling nfs4_ol_stateid references when we
* release a stateowner.
* so_perlockowner: (open) nfs4_ol_stateid->st_perlockowner entry - used when
* close is called to reap associated byte-range locks
* so_close_lru: (open) stateowner is placed on this list instead of being
* reaped (when so_perfilestate is empty) to hold the last close replay.
* reaped by laundramat thread after lease period.
*/
struct nfs4_stateowner {
struct list_head so_strhash; /* hash by op_name */
struct list_head so_stateids;
@ -366,7 +347,14 @@ struct nfs4_stateowner {
struct nfs4_openowner {
struct nfs4_stateowner oo_owner; /* must be first field */
struct list_head oo_perclient;
struct list_head oo_close_lru; /* tail queue */
/*
* We keep around openowners a little while after last close,
* which saves clients from having to confirm, and allows us to
* handle close replays if they come soon enough. The close_lru
* is a list of such openowners, to be reaped by the laundromat
* thread eventually if they remain unused:
*/
struct list_head oo_close_lru;
struct nfs4_ol_stateid *oo_last_closed_stid;
time_t oo_time; /* time of placement on so_close_lru */
#define NFS4_OO_CONFIRMED 1
@ -443,23 +431,6 @@ static inline struct file *find_any_file(struct nfs4_file *f)
return f->fi_fds[O_RDONLY];
}
/*
* nfs4_ol_stateid can either be an open stateid or (eventually) a lock stateid
*
* (open)nfs4_ol_stateid: one per (open)nfs4_stateowner, nfs4_file
*
* st_hash: stateid_hashtbl[] entry or lockstateid_hashtbl entry
* st_perfile: file_hashtbl[] entry.
* st_perfile_state: nfs4_stateowner->so_perfilestate
* st_perlockowner: (open stateid) list of lock nfs4_stateowners
* st_access_bmap: used only for open stateid
* st_deny_bmap: used only for open stateid
* st_openstp: open stateid lock stateid was derived from
*
* XXX: open stateids and lock stateids have diverged sufficiently that
* we should consider defining separate structs for the two cases.
*/
/* "ol" stands for "Open or Lock". Better suggestions welcome. */
struct nfs4_ol_stateid {
struct nfs4_stid st_stid;